There was a problem transforming the image.

[dfrankes]

We are unable to use the image, after setting all the permissions (created a new bucket for it) and uploading an test image to the bucket and then accesing the url https://our-app.appspot.com/image-url?bucket=resize-bucket&image=test_image.jpg it will just say the following

There was a problem transforming the image. Ensure the GAE service account has access to the object in Google Cloud Storage.

And when i remove the permissions from the bucket it will throw a different error

Ensure the GAE service account has access to the object in Google Cloud Storage.

[albertcht]

Usually it's caused by wrong permissions configured.

[remotevision]

any luck on this? I am getting the same error and have tried a few workarounds. Here are a couple obvious things I've tried, but no luck. In your example, I notice you import from google.appengine.ext import blobstore but just confirming that is unnecessary since we are using the GCS file path - correct?

1. Giving <google-project-id>@appspot.gserviceaccount.com Storage Object Admin privileges on the bucket.
2. Temporarily removed permissions just to see if it would work

One thing I noticed when looking at what was deployed on app-engine is that it doesn't look like the google.appengine dependencies are installed, unless I'm missing something.

[albertcht]

Hi @dfrankes ,

I notice you import from google.appengine.ext import blobstore but just confirming that is unnecessary since we are using the GCS file path - correct?

Yes.

One thing I noticed when looking at what was deployed on app-engine is that it doesn't look like the google.appengine dependencies are installed, unless I'm missing something.

google.appengine is provided in standard environment for Python on GAE.

[asktree]

I am also having this problem. My default app engine service account definitely has the right permissions.

[asktree]

@dfrankes @remotevision
The problem for me seems to be that get_serving_url will not work using buckets that have Bucket Policy Only. You must use a bucket with Object-Level permissions. There is nothing the author of this repo can do to fix this as far as I'm aware.

Found here: https://stackoverflow.com/questions/14075832/transformationerror-on-blob-via-get-serving-url-app-engine

Seems to be working for me now that I have switched buckets.

[remotevision]

@asktree wow, I would not have thought this. I'll give it a shot. Thanks!

EDIT: That worked!

[dfrankes]

@asktree Thanks, ill try that a little bit later today.

[birhanuh]

I granted the Storage Object Admin role and many other possible roles to my App Engine default service account but, still getting the error. Not working for me.

[dfrankes]

I granted the Storage Object Admin role and many other possible roles to my App Engine default service account but, still getting the error. Not working for me.

We created our own resizer using https://kraken.io instead, working flawlessly without any problems for the last 12 months. we could not get this repo to work properly

[birhanuh]

Thinking to solve with S3 and lamda re-sizer function. Or add middle-man imgix. But, thanks will check kraken too!

[Leonardo-Henrique]

@dfrankes @remotevision The problem for me seems to be that get_serving_url will not work using buckets that have Bucket Policy Only. You must use a bucket with Object-Level permissions. There is nothing the author of this repo can do to fix this as far as I'm aware.

Found here: https://stackoverflow.com/questions/14075832/transformationerror-on-blob-via-get-serving-url-app-engine

Seems to be working for me now that I have switched buckets.

This was exactly the solution.